add config file support
removed allow_no_value for python 2.6 compatibility
fixed getting the default values from the DEFAULT section
fix syntax error
fix json default value
manually support parameters that can be None, fix
add example config file
add example config file
Merge branch 'configfile' of https://github.com/mhellmic/fts3 into configfile
Merge pull request #3 from mhellmic/configfile

Added support for a configfile